Physics on the move

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Question 9
Medium

A student investigates collisions of gliders on a horizontal low-friction track.

a.

State the two quantities involved with motion which are conserved during an elastic collision.

[2]
b.

Glider P has a mass of 1.5 kg. Glider Q has a mass of 2.5 kg. Diagram showing two gliders, P and Q, on a horizontal low-friction track. Glider P on the left has a mass of 1.5 kg and is moving to the right with a velocity of 4.6 m/s. Glider Q on the right has a mass of 2.5 kg and is moving to the right with a velocity of 1.8 m/s. Both velocities are depicted with horizontal arrows pointing to the right. Calculate the momentum of each glider. Glider P = ______ kg m/s\text{kg m/s}kg m/s Glider Q = ______ kg m/s\text{kg m/s}kg m/s

[2]
c.

The two gliders collide and stick together after the collision. Calculate the speed of the combined gliders after the collision. Record your answer to 2 significant figures.

[4]

Physics on the move Questions

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